Omega in Hiding by Beau Brown

Omega Connor Murphy escaped his Irish mobster family at eighteen, seeking a life far from their violent criminal ways. Now twenty-four, he works as a manny under the name Connor Smith, where he finds joy in caring for children, filling the void left by his inability to have his own. Hired as a manny by Dario Coppola, Valentino Syracuse’s second in command, Connor enters a world familiar yet distant from his own troubled past.
Alpha Paolo Syracuse, mob boss Valentino’s younger brother, is pressured to learn the family’s illicit business. Preferring art and books to mob life, Paolo reluctantly agrees to spend time at Dario’s home, learning the ropes. There, he meets Connor, the shy and captivating new manny. Paolo has never been truly interested in an omega before. But there’s something about the enigmatic Connor that draws him in.
Connor knows better than to get emotionally entangled with anyone connected to the mobster life. But he’s lonely and Paolo is a nice distraction. Connor and Paolo start a no-strings secret affair, which is exciting at first. Then things take a dark turn when Connor, against all odds, ends up pregnant, and his violent Irish mobster family comes calling.